2005 Volvo S80 Refrigerant

[steskaej]

How do I add 134A and PAG oil to my A/C in my '05 S80? I do see that our local auto parts store sells just 134A, and also 134A with PAG oil.

Any suggestions, advice? Also, how much PAG oil does the A/C need (ratio of 134A to PAG). I do realize the system uses 2.2Lb of R134a.

Thank you.

[MadeInJapan]

Welcome to MVS.
Hopefully the document I've uploaded below will help you understand the procedure. I'm not really familiar with your particular vehicle but I would probably leave this to the pro's as the R134-A has to be filled through the high port, unlike older Volvo's which only had a low side. Also, unless you lost most of your gas suddenly there is no need to add any PAG oil- not sure of which PAG to add anyway- it depends on your compressor- there are several different viscosity weights of this oil.

05 S80 AC Filling.pdf

(251.82 KiB) Downloaded 1236 times

[vegasjetskier]

I haven't done it myself, but I have read of people filling through the lowside fitting by the power steering reservoir. Don't fill through the highside port unless you have the proper equipment as the pressure can get high enough to blow up the little cans of freon you get at the auto parts store.

[Crito]

PSI won't tell you how much refrigerant or compressor oil you have in the system. Only way to know for sure is to completely empty and refill, which requires expensive equipment. You can also over-pressurize with those little cans which will trigger cutoff switch and render the system inoperative. But if you still want to try it yourself the low-side port is right next to your serpentine belt and the cap says "6 NM max" on it. If you put oil in be careful not to get any on the belt or it could start slipping/squealing. The high mileage cans of 134a have about 2oz of oil per 10oz of refrigerant. That should be plenty for a quick recharge.

[reachlorenzo]

Picture of "Low Port" valve. My index finger points to the Low Port Valve, on my 2006 Volvo S80.

I disagree vehemently with those that say that you can not refill the R134a Refrigerant on the S80. I just refilled my 2006 Volvo S80, and it was incredibly easy. You don't need to find the High Port; use the Low Port, instead. I used: A/C Pro for my vehicle. $39.95 retail. (Note: I am not a shill for A/C Pro; I just happened to use their product, and found the instructions and complete procedure to be incredibly easy.)

I attached the quick-connect fitting to the low port valve. The initial pressure reading was about 10 psi--taken with the engine running. I pulled on the trigger assembly, to initiate the charging process (after following the instructions on the can) and it started to charge, or refill my system. I consistently turned the can to the 3 o'clock, and 12 o'clock position and released the trigger intermittently to check the pressure. Once it reached about 32-35 PSI, I stopped the process.


On my '06 S80, the Low Port is located about 10-12" (25-30cm) behind the passenger headlamp assembly. It is mere inches from the exposed drive belt, so you want to ensure that you remove the valve cap, prior to starting the engine, for safety reasons. (I have attached a picture; my left index finger is pointing to the valve cap.) [Side Note: I have looked at some forums which indicate that the location of the low pressure port is under the P/Steering unit, towards the back of the engine compartment, and several parts have to be moved to achieve this. I would not have accomplished this with my mechanical aptitude, had that been the case.]

Good Luck to all!

I must extend a very sincere, Thank You, to www.matthewsvolvosite.com for all of the help.


Instructions: I have included a link to the instructions (I peeled the instruction booklet off of the product can and re-adhered the tape to the radiator cowl for quick reference.)

acprocold.com/wp-content/themes/AcPro/pdf/english.pdf